Science, asked by jaan50863, 2 months ago

5. The first effective vaccine against polio was prepared by
(a) John Heynsham Gibbon
(b) James Simpson
(c) Jonas E. Salk
(d) Robert Edwards​

Answers

Answered by rajusingh870870870
0

Answer:

James heynsham gibbon

Explanation:

please brainlist

Answered by tsraojyoty
1

Answer:

hope it is USEFUL

Explanation:

Dr. Jonas Salk

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